--- title: "React Native Crash Reporting: Tools and Techniques (2026)" description: "How React Native crash reporting works for native crashes and JavaScript errors, the best tools (Crashlytics, Sentry, UXCam) and how to find root causes." url: https://uxcam.com/blog/react-native-crash-reporting/ language: en-US date_published: 2024-11-30T23:00:00.000Z date_modified: 2026-10-30T00:00:00.000Z --- # React Native Crash Reporting: Tools and Techniques (2026) **React Native crash reporting** collects the details of every crash in your app so you can find and fix the cause. A crash report includes the stack trace, the device, the OS and the app version. In React Native you need two layers: native crashes in iOS and Android code, and JavaScript errors in your React code. Popular tools include Firebase Crashlytics, Sentry and UXCam. | Tool | What it captures | Best for | | --- | --- | --- | | Firebase Crashlytics | Crashes, plus handled errors you record | Free crash reporting for teams already on Firebase | | Sentry | JavaScript errors and native crashes in one SDK | Developer teams that want detailed error tracking | | UXCam | Native crashes, ANRs and UI freezes linked to session replays; JavaScript errors as custom events | Seeing what users did right before a crash | | React Native DevTools and LogBox | JavaScript errors and warnings during development | Debugging before you ship | Crashes are part of building mobile apps. Even the best teams ship bugs that close the app or make it behave in ways nobody expected. What separates stable apps from the rest is how quickly those crashes are found, understood and fixed. [React Native](https://reactnative.dev/) makes this a little harder, because a crash can start in your JavaScript or in the native iOS and Android code underneath. This guide covers how React Native crash reporting works, the practices that make it useful, and how to set it up with [UXCam](https://uxcam.com/experience-analytics/issue-analytics/). ## Why does crash reporting matter for React Native apps? Crash reporting collects data every time your app crashes or hits an error: the stack trace, device information and the user actions that led up to it. For a React Native app, it's how you find problems in both the JavaScript and the native layer before users give up on the app. It pays off in three ways: - **More stable apps:** Crash data shows patterns, so you can fix the causes before they spread to more users. - **Less downtime:** You find the cause of a crash faster and ship a fix sooner. - **Less time hunting bugs:** Instead of trying to reproduce a crash from a vague report, you start from the stack trace and the context around it. In React Native, a complete setup covers both layers. Native crash reporters catch crashes in iOS and Android code. JavaScript errors need an error boundary, a global handler or a tool that hooks into the React Native runtime. ## Best practices for React Native crash reporting Crash reporting only helps if you act on it. These four practices make the difference between a pile of reports and a stable app. ### 1. Choose the right crash reporting software The right tool depends on your team and your stack. Compare a few [analytics and crash reporting tools](https://uxcam.com/blog/top-mobile-app-analytics-tools/) against these qualities: - **Easy integration:** A tool with a maintained React Native SDK gives you accurate reports with less setup. - **Real-time reporting:** Crashes should show up within minutes, so your engineers can respond while a release is still rolling out. - **Customizable alerts:** Alerts should reach your team where it works, with thresholds you control. - **Clear dashboards:** Good dashboards show which crashes affect the most users, so you know what to fix first. - **User behavior context:** Session data shows how users were interacting with the app when it crashed. Common options for React Native include [UXCam](https://uxcam.com/), Raygun, Firebase Crashlytics and Sentry. Each has strengths and trade-offs, so the right choice depends on what you need. Firebase Crashlytics, for example, is free and reports crashes in real time. UXCam links each crash to a [session replay](https://uxcam.com/blog/react-native-session-recording-replay-tool/), so you see what the user did before and after it. ### 2. Log errors with context Detailed error logs help your developers find the root cause of a crash and fix it quickly. Log the user actions, device information, network status and app state around each error. Log both unhandled exceptions and the errors your code catches. Breadcrumbs help too. These are short log messages at key steps, such as "checkout started" or "payment submitted". When a crash happens, they show how far the user got. Tools take much of this work off your plate. [UXCam automatically captures native crashes, ANRs and UI freezes](https://uxcam.com/experience-analytics/issue-analytics/). Each one links to the replay of the session it happened in, with the stack trace in a detailed app log. React Native adds one gap to plan for. JavaScript exceptions are handled by the React Native runtime, not the native layer, so UXCam's crash reports don't include them. There's no handled-exception API in the React Native SDK yet either. Instead, the [UXCam crash docs](https://developer.uxcam.com/docs/crashes-and-anrs-react-native) suggest logging them as custom events from ErrorUtils.setGlobalHandler or an error boundary. Each error then sits on the session timeline next to the native issues. ### 3. Monitor and alert proactively Don't wait for users to report crashes. Set up alerts that fire as soon as a new crash appears, based on crash type, frequency or severity. That way you can fix critical issues before they reach more users. Watch your crash-free sessions after every release. A drop right after an update usually points to code that shipped in that release, which narrows the search. Send alerts where your team already works, such as Slack or email. The right people see them right away and can work on a fix together. ### 4. Pair crash reports with session replay Crash reports tell you where the code failed, but not what the user was doing. [Session replay](https://uxcam.com/blog/session-replay-tools-for-mobile-apps/) fills that gap. A replay shows the exact sequence of taps, screens and events that led up to a crash. That makes the crash easier to reproduce and faster to fix. Together, crash reports and replays give product managers and developers the full picture. ## How to set up React Native crash reporting with UXCam Setting up crash reporting with UXCam takes a few minutes: install the SDK, start it with your app key, and tag your screens. Native crashes, ANRs and UI freezes are then captured automatically. ### Why use UXCam for React Native crash reporting? There are many [crash reporting tools](https://uxcam.com/blog/mobile-app-crash-reporting-tools/) for React Native. UXCam stands out for the context it adds to each crash: - It captures native crashes, ANRs and UI freezes automatically and links each one to the session replay. JavaScript errors can be added as custom events. - It integrates with React Native through a lightweight SDK, so setup is quick. - Its dashboards show detailed crash reports, so you find the root cause faster. - Its session recordings show exactly what the user was doing when the app crashed. ### How to set up UXCam for React Native crash reporting Follow these steps: 1. Create a UXCam account and copy your app key from the dashboard. 2. Install the SDK with npm install react-native-ux-cam, or the yarn equivalent. Then run pod install in your ios folder. Expo apps need a development build or EAS Build, because Expo Go can't load native modules. 3. In your root component, call RNUxcam.optIntoVideoRecording() and then RNUxcam.startWithConfiguration() with your app key. Crash handling is on by default, so crashes, ANRs and UI freezes are recorded from the first session. The [crashes and ANRs guide](https://developer.uxcam.com/docs/crashes-and-anrs-react-native) lists the options. 4. Running another crash reporter, such as Firebase Crashlytics? Decide which tool owns native crashes and turn off the other's handler at app start. Two handlers can conflict. 5. Tag your screens with RNUxcam.tagScreenName(), then log the custom events and JavaScript errors that matter to your team. 6. Set up alerts for crashes and UI freezes, and start monitoring your app. ### Issue analytics for React Native UXCam's [Issue Analytics](https://uxcam.com/blog/fix-bugs-in-your-app-with-issue-analytics/) splits your app's problems into crashes and UI freezes. Start by choosing which one you want to analyze: Next, review the basic statistics: how many crashes or UI freezes occurred, how many users and sessions they affected, and what share of sessions had no issues at all. Trends show whether issues are increasing or decreasing over time, and which app versions, OS versions or devices cause the most problems. That tells you what to debug first. ### Tracking app crashes in React Native UXCam monitors crashes across the iOS and Android builds of your React Native app. Under **Crash types**, you get a list of crashes with their cause, how often they happen, how many users they affect and on which platform. ### UI freeze analytics in React Native Under **UI Freezes**, you see every type of freeze in your app, with its average and maximum duration. ### Dig deeper into crashes in React Native Click any issue to open its crash or UI freeze log. You'll see detailed statistics and the list of affected sessions, each with its session replay. Watching those sessions shows the steps needed to reproduce the issue, which makes it faster to debug and fix. You can also click a user to see how the problem affected their behavior afterwards. ### Instant crash reporting notifications Turn on Slack notifications in UXCam to get alerts for crashes and UI freezes as they happen, so you can react quickly. ## How do you find the root cause of a React Native crash? Start with the crashes that affect the most users, then work through patterns, devices, the stack trace and user feedback. These five steps keep the process focused. ### 1. Prioritize actionable crash reports Focus on crash reports you can act on, such as those with app logs that show exactly what failed. Not every crash needs immediate attention. Sort reports by severity, frequency and the number of users affected. Fixing the high-impact crashes first improves stability fastest. ### 2. Look for patterns Analyze crash reports together, not one at a time. Many crashes share one cause, such as a memory leak or a null pointer exception. Check whether specific devices or OS versions crash more often. Patterns like these point you to the root cause. ### 3. Check the device and OS versions Some crashes only happen on certain devices or OS versions. Crash reporting tools show the device and OS for each report, so you can spot what the affected users have in common. Use this to triage. Prioritize crashes on the devices and OS versions most of your users have, and test on a range of devices during development, so fewer of these problems reach production. ### 4. Analyze the stack trace The stack trace shows the sequence of function calls that led to the crash, which makes it easier to pinpoint the exact problem. Make sure the trace is readable. For native crashes, upload your debug symbols (dSYM files on iOS, ProGuard or R8 mapping files on Android). For JavaScript errors, upload source maps, so the trace points to your original code instead of the minified bundle. UXCam shows the stack trace next to the session replay. Read it for clues about the cause, then fix the code so similar crashes don't come back. ### 5. Use user feedback Users often notice problems before your dashboards do. Encourage feedback through in-app reports, app store reviews and social media, and read it alongside your crash reports. The better you understand how your app behaves in production, the fewer crashes reach your users. ## Which crash reporting tool should you use for React Native? The best tool depends on what you need from your crash data. Firebase Crashlytics is free and widely used, and Sentry covers JavaScript errors and native crashes in one SDK. [UXCam](https://uxcam.com/experience-analytics/issue-analytics/) fits when you want to see what users did before a crash: it links native crashes, ANRs and UI freezes to session replays, with heatmaps and product analytics on top. Learn how **Inspire Fitness reduced total app crashes by 40% and rage taps by 56% with UXCam**: [read the case study](https://uxcam.com/case-study/inspire-fitness/). With UXCam, teams find the cause of a crash quickly and decide what to improve next, based on how real users experience the app. [Start your free UXCam trial today](https://tara.uxcam.com/signup) FAQ ### What is crash reporting in React Native? Crash reporting in React Native means automatically collecting data when your app crashes: the stack trace, device, OS, app version and what led up to it. Because React Native runs JavaScript on top of native code, a complete setup captures native crashes and JavaScript errors. ### What is the best crash reporting tool for React Native? It depends on what you need. Firebase Crashlytics is free and widely used. Sentry covers JavaScript and native errors in one SDK. UXCam captures native crashes, ANRs and UI freezes and links each one to a session replay, so you see what the user did before the crash. ### Does UXCam report JavaScript errors in React Native? Not automatically. UXCam captures native crashes, ANRs and UI freezes on its own. JavaScript exceptions stay in the React Native runtime, so log them as custom events with RNUxcam.logEvent() from a global error handler or an error boundary. They then show on the session timeline. ### Can I use Crashlytics and UXCam together? Yes, but decide which tool owns native crash reporting, because two crash handlers in one app can conflict. If Crashlytics owns crashes, set enableCrashHandling to false in UXCam and keep using it for session replay and analytics. On iOS, that setting also turns off UXCam's ANR and UI-freeze capture. ### What should a React Native crash report include? At minimum: a symbolicated stack trace, the device model, OS version, app version and the time of the crash. Breadcrumbs or a session replay show what the user did before it happened. Group crashes by cause and by how many users they affect, so you fix the biggest problems first. **Related Articles** [Best React Native heatmap tool](https://uxcam.com/blog/heatmap-tool-react-native-mobile-apps/) [Session replay for React Native Apps](https://uxcam.com/blog/react-native-session-recording-replay-tool/) [Mobile app analytics for React Native apps](https://uxcam.com/blog/react-native-mobile-app-analytics-tool/) [React Native performance monitoring - Best tools and techniques](https://uxcam.com/blog/react-native-performance-monitoring/) [React Native IAP - Using Analytics To Boost In-App Purchase](https://uxcam.com/blog/react-native-iap/)